{"id":34921,"date":"2024-08-27T09:42:10","date_gmt":"2024-08-27T02:42:10","guid":{"rendered":"http:\/\/jupitek.maudemo.vip\/index.php\/2024\/08\/27\/network-configuration-using-ifupdown\/"},"modified":"2026-05-14T10:30:41","modified_gmt":"2026-05-14T09:30:41","slug":"network-configuration-using-ifupdown","status":"publish","type":"post","link":"https:\/\/jupitek.maudemo.vip\/index.php\/2024\/08\/27\/network-configuration-using-ifupdown\/","title":{"rendered":"C\u1ea5u h\u00ecnh m\u1ea1ng s\u1eed d\u1ee5ng ifupdown"},"content":{"rendered":"<p>G\u00f3i ifupdown l\u00e0 m\u1ed9t ph\u1ea7n m\u1ec1m c\u1ea5u h\u00ecnh m\u1ea1ng c\u0169 h\u01a1n v\u1eabn \u0111\u01b0\u1ee3c Debian v\u00e0 c\u00e1c b\u1ea3n ph\u00e2n ph\u1ed1i Ubuntu c\u0169 h\u01a1n s\u1eed d\u1ee5ng (ch\u1eb3ng h\u1ea1n nh\u01b0 16.04 LTS tr\u1edf v\u1ec1 tr\u01b0\u1edbc).<\/p>\n<p class=\"has-background\" style=\"background-color:#74f78c33\">C\u00e1c b\u1ea3n ph\u00e1t h\u00e0nh Ubuntu m\u1edbi h\u01a1n s\u1eed d\u1ee5ng Netplan k\u1ebft h\u1ee3p v\u1edbi systemd-networkd (ho\u1eb7c NetworkManager). C\u00e1c b\u1ea3n ph\u00e1t h\u00e0nh Debian m\u1edbi h\u01a1n c\u0169ng bao g\u1ed3m systemd-networkd, m\u1eb7c d\u00f9 ifupdown v\u1eabn l\u00e0 m\u1eb7c \u0111\u1ecbnh.<\/p>\n<p class=\"has-background\" style=\"background-color:#74f78c33\">H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u00f3ng vai tr\u00f2 b\u1ed5 sung cho c\u1ea5u h\u00ecnh m\u1ea1ng Th\u1ee7 c\u00f4ng ch\u00ednh trong h\u01b0\u1edbng d\u1eabn Phi\u00ean b\u1ea3n \u0111i\u1ec7n to\u00e1n. Vui l\u00f2ng xem l\u1ea1i h\u01b0\u1edbng d\u1eabn \u0111\u00f3 tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 thay \u0111\u1ed5i c\u1ea5u h\u00ecnh n\u00e0o \u0111\u1ed1i v\u1edbi Phi\u00ean b\u1ea3n \u0111i\u1ec7n to\u00e1n c\u1ee7a b\u1ea1n.<\/p>\n<p><strong>T\u1ec7p c\u1ea5u h\u00ecnh<\/strong><\/p>\n<p>C\u00e0i \u0111\u1eb7t c\u1ea5u h\u00ecnh m\u1ea1ng cho ifupdown \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u00ean trong t\u1ec7p giao di\u1ec7n ho\u1eb7c chu\u1ed7i t\u1ec7p. C\u1ea5u h\u00ecnh ch\u00ednh th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong \/etc\/network\/interfaces v\u00e0 c\u00e1c t\u1ec7p b\u1ed5 sung th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u00eam v\u00e0o trong \/etc\/network\/interfaces.d\/*<\/p>\n<p>T\u1ec7p c\u1ea5u h\u00ecnh m\u1eb7c \u0111\u1ecbnh: \/etc\/network\/interfaces<\/p>\n<p><strong>C\u1ea5u h\u00ecnh kh\u1edfi \u0111\u1ed9ng<\/strong><\/p>\n<p>\u0110\u00e2y l\u00e0 v\u00ed d\u1ee5 v\u1ec1 t\u1ec7p c\u1ea5u h\u00ecnh \u0111i\u1ec3n h\u00ecnh cho ifupdown. N\u00f3 x\u00e1c \u0111\u1ecbnh t\u0129nh \u0111\u1ecba ch\u1ec9 IPv4 v\u00e0 cho ph\u00e9p SLAAC \u0111\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ecba ch\u1ec9 IPv6.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1001\" height=\"402\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-84.png\" alt=\"\" class=\"wp-image-1458\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-84.png 1001w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-84-300x120-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-84-768x308-1.png 768w\" sizes=\"auto, (max-width: 1001px) 100vw, 1001px\" \/><\/figure>\n<p><strong>\u0110\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ecba ch\u1ec9 IP theo c\u00e1ch th\u1ee7 c\u00f4ng<\/strong><\/p>\n<ul>\n<li>\u0110\u0103ng nh\u1eadp v\u00e0o Cloud Manager v\u00e0 xem l\u1ea1i \u0111\u1ecba ch\u1ec9 IP c\u1ee7a Phi\u00ean b\u1ea3n \u0111i\u1ec7n to\u00e1n c\u1ee7a b\u1ea1n. Xem Qu\u1ea3n l\u00fd \u0111\u1ecba ch\u1ec9 IP. H\u00e3y ghi l\u1ea1i nh\u1eefng th\u00f4ng tin sau \u0111\u00e2y ho\u1eb7c gi\u1eef cho trang n\u00e0y c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o sau n\u00e0y.\n<ul>\n<li>\u0110\u1ecba ch\u1ec9 IPv4 c\u00f4ng khai v\u00e0 c\u1ed5ng IPv4 li\u00ean quan<\/li>\n<li>\u0110\u1ecba ch\u1ec9 IPv4 ri\u00eang t\u01b0 (n\u1ebfu \u0111\u00e3 th\u00eam)<\/li>\n<li>\u0110\u1ecba ch\u1ec9 SLAAC IPv6 v\u00e0 c\u1ed5ng IPv6 li\u00ean quan<\/li>\n<li>Ph\u1ea1m vi \u0111\u1ecbnh tuy\u1ebfn IPv6 \/64 ho\u1eb7c \/56 (n\u1ebfu \u0111\u00e3 th\u00eam)<\/li>\n<li>B\u1ed9 gi\u1ea3i quy\u1ebft DNS (n\u1ebfu b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng b\u1ed9 gi\u1ea3i quy\u1ebft Linode)<\/li>\n<\/ul>\n<\/li>\n<li>T\u1eaft Network Helper tr\u00ean Compute Instance \u0111\u1ec3 n\u00f3 kh\u00f4ng ghi \u0111\u00e8 b\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o c\u1ee7a b\u1ea1n khi kh\u1edfi \u0111\u1ed9ng l\u1ea1i h\u1ec7 th\u1ed1ng l\u1ea7n sau. \u0110\u1ec3 bi\u1ebft h\u01b0\u1edbng d\u1eabn, h\u00e3y xem h\u01b0\u1edbng d\u1eabn Network Helper. H\u01b0\u1edbng d\u1eabn n\u00e0y bao g\u1ed3m c\u00e1ch t\u1eaft Network Helper tr\u00ean to\u00e0n c\u1ea7u (cho t\u1ea5t c\u1ea3 Compute Instance tr\u00ean t\u00e0i kho\u1ea3n c\u1ee7a b\u1ea1n) ho\u1eb7c ch\u1ec9 cho m\u1ed9t instance duy nh\u1ea5t.<\/li>\n<li>\u0110\u0103ng nh\u1eadp v\u00e0o Compute Instance b\u1eb1ng SSH ho\u1eb7c Lish. B\u1ea1n c\u00f3 th\u1ec3 c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng Lish \u0111\u1ec3 tr\u00e1nh b\u1ecb kh\u00f3a trong tr\u01b0\u1eddng h\u1ee3p x\u1ea3y ra l\u1ed7i c\u1ea5u h\u00ecnh.<\/li>\n<li>Th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 b\u01b0\u1edbc c\u1ea5u h\u00ecnh c\u1ea7n thi\u1ebft n\u00e0o nh\u01b0 \u0111\u01b0\u1ee3c n\u00eau trong quy tr\u00ecnh l\u00e0m vi\u1ec7c b\u00ean d\u01b0\u1edbi. B\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9nh s\u1eeda t\u1ec7p c\u1ea5u h\u00ecnh m\u1ea1ng c\u1ee7a m\u00ecnh b\u1eb1ng tr\u00ecnh so\u1ea1n th\u1ea3o v\u0103n b\u1ea3n nh\u01b0 nano ho\u1eb7c vim.<\/li>\n<\/ul>\n<pre class=\"wp-block-code\"><code>sudo nano \/etc\/network\/interfaces<\/code><\/pre>\n<ul>\n<li>Sau khi ch\u1ec9nh s\u1eeda t\u1ec7p c\u1ea5u h\u00ecnh cho ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a m\u00ecnh, b\u1ea1n c\u1ea7n \u00e1p d\u1ee5ng c\u00e1c thay \u0111\u1ed5i ho\u1eb7c kh\u1edfi \u0111\u1ed9ng l\u1ea1i Phi\u00ean b\u1ea3n \u0111i\u1ec7n to\u00e1n. \u0110\u1ec3 \u00e1p d\u1ee5ng c\u00e1c thay \u0111\u1ed5i c\u1ee7a b\u1ea1n v\u1edbi ifupdown, h\u00e3y ch\u1ea1y c\u00e1c l\u1ec7nh sau:<\/li>\n<\/ul>\n<pre class=\"wp-block-code\"><code>sudo ifdown eth0 &amp;&amp; sudo ip addr flush eth0 &amp;&amp; sudo ifup eth0<\/code><\/pre>\n<p><strong>Thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IPv4 ch\u00ednh<\/strong><\/p>\n<p>\u0110\u1ec3 thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IPv4 ch\u00ednh \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh tr\u00ean h\u1ec7 th\u1ed1ng, h\u00e3y \u0111\u1eb7t tham s\u1ed1 \u0111\u1ecba ch\u1ec9 v\u00e0 c\u1ed5ng trong iface eth0 inet static \u0111\u1ec3 kh\u1edbp v\u1edbi \u0111\u1ecba ch\u1ec9 IP m\u1edbi v\u00e0 \u0111\u1ecba ch\u1ec9 IP c\u1ed5ng t\u01b0\u01a1ng \u1ee9ng c\u1ee7a n\u00f3.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"939\" height=\"171\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-85.png\" alt=\"\" class=\"wp-image-1459\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-85.png 939w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-85-300x55-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-85-768x140-1.png 768w\" sizes=\"auto, (max-width: 939px) 100vw, 939px\" \/><\/figure>\n<p><strong>Thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IPv4 ch\u00ednh<\/strong><\/p>\n<p>\u0110\u1ec3 thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IPv4 ch\u00ednh \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh tr\u00ean h\u1ec7 th\u1ed1ng, h\u00e3y \u0111\u1eb7t tham s\u1ed1 \u0111\u1ecba ch\u1ec9 v\u00e0 c\u1ed5ng trong iface eth0 inet static \u0111\u1ec3 kh\u1edbp v\u1edbi \u0111\u1ecba ch\u1ec9 IP m\u1edbi v\u00e0 \u0111\u1ecba ch\u1ec9 IP c\u1ed5ng t\u01b0\u01a1ng \u1ee9ng c\u1ee7a n\u00f3.<\/p>\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-86.png\" alt=\"\" class=\"wp-image-1460\" width=\"941\" height=\"167\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-86.png 1009w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-86-300x53-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-86-768x136-1.png 768w\" sizes=\"auto, (max-width: 941px) 100vw, 941px\" \/><\/figure>\n<p><strong>\u0110\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ecba ch\u1ec9 IPv4 ch\u00ednh th\u00f4ng qua DHCP<\/strong><\/p>\n<p>DHCP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng \u0111\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ecba ch\u1ec9 IPv4 ch\u00ednh c\u1ee7a b\u1ea1n. \u0110\u1ecba ch\u1ec9 IPv4 ch\u00ednh \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 \u0111\u1ecba ch\u1ec9 IPv4 \u0111\u01b0\u1ee3c g\u00e1n cho h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n, n\u1eb1m \u1edf v\u1ecb tr\u00ed \u0111\u1ea7u ti\u00ean khi \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo s\u1ed1. \u0110\u1ec3 b\u1eadt DHCP, h\u00e3y s\u1eeda \u0111\u1ed5i ho\u1eb7c th\u00eam iface cho giao di\u1ec7n c\u1ee7a b\u1ea1n b\u1eb1ng dhcp thay v\u00ec t\u0129nh<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"997\" height=\"205\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-87.png\" alt=\"\" class=\"wp-image-1461\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-87.png 997w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-87-300x62-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-87-768x158-1.png 768w\" sizes=\"auto, (max-width: 997px) 100vw, 997px\" \/><\/figure>\n<p class=\"has-background\" style=\"background-color:#fcb90033\">Khi s\u1eed d\u1ee5ng DHCP, \u0111\u1ecba ch\u1ec9 IPv4 \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh tr\u00ean h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 thay \u0111\u1ed5i n\u1ebfu b\u1ea1n th\u00eam ho\u1eb7c x\u00f3a \u0111\u1ecba ch\u1ec9 IPv4 tr\u00ean Phi\u00ean b\u1ea3n \u0111i\u1ec7n to\u00e1n c\u1ee7a m\u00ecnh. N\u1ebfu \u0111i\u1ec1u n\u00e0y x\u1ea3y ra, m\u1ecdi c\u00f4ng c\u1ee5 ho\u1eb7c h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IPv4 ban \u0111\u1ea7u s\u1ebd kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c n\u1eefa.<\/p>\n<p>\u0110\u1ec3 t\u1eaft DHCP, h\u00e3y chuy\u1ec3n dhcp v\u1ec1 tr\u1ea1ng th\u00e1i t\u0129nh v\u00e0 th\u00eam th\u1ee7 c\u00f4ng c\u00e1c \u0111\u01b0\u1eddng c\u1ed5ng v\u00e0 \u0111\u1ecba ch\u1ec9 c\u00f3 li\u00ean quan.<\/p>\n<p><strong>\u0110\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ecba ch\u1ec9 IPv4 b\u1ed5 sung<\/strong><\/p>\n<p>\u0110\u1ecba ch\u1ec9 IP b\u1ed5 sung c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh b\u1eb1ng c\u00e1ch th\u00eam ho\u1eb7c s\u1eeda \u0111\u1ed5i nh\u00f3m iface cho giao di\u1ec7n mong mu\u1ed1n. Nhi\u1ec1u d\u00f2ng \u0111\u1ecba ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c cung c\u1ea5p \u0111\u1ec3 \u0111\u1ecbnh c\u1ea5u h\u00ecnh nhi\u1ec1u \u0111\u1ecba ch\u1ec9 IP.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"886\" height=\"162\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-88.png\" alt=\"\" class=\"wp-image-1462\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-88.png 886w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-88-300x55-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-88-768x140-1.png 768w\" sizes=\"auto, (max-width: 886px) 100vw, 886px\" \/><\/figure>\n<p>Trong v\u00ed d\u1ee5 tr\u00ean, h\u00e3y th\u1ef1c hi\u1ec7n c\u00e1c thay th\u1ebf sau:<\/p>\n<ul>\n<li>[ip-address]: \u0110\u1ecba ch\u1ec9 IPv4 m\u00e0 b\u1ea1n mu\u1ed1n c\u1ea5u h\u00ecnh t\u0129nh.<\/li>\n<\/ul>\n<ul>\n<li>[prefix]: Ti\u1ec1n t\u1ed1 d\u1ef1a tr\u00ean lo\u1ea1i \u0111\u1ecba ch\u1ec9 IP m\u00e0 b\u1ea1n \u0111ang th\u00eam. Ti\u1ec1n t\u1ed1 ph\u1ea3i l\u00e0 24 \u0111\u1ed1i v\u1edbi \u0111\u1ecba ch\u1ec9 IPv4 c\u00f4ng khai v\u00e0 17 \u0111\u1ed1i v\u1edbi \u0111\u1ecba ch\u1ec9 IPv4 ri\u00eang t\u01b0.<\/li>\n<\/ul>\n<p><strong>\u0110\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ecba ch\u1ec9 IPv6 ch\u00ednh th\u00f4ng qua SLAAC<\/strong><\/p>\n<p>SLAAC \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng \u0111\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ecba ch\u1ec9 IPv6 ch\u00ednh c\u1ee7a b\u1ea1n. Trong ifupdown, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ecba ch\u1ec9 IPv6 SLAAC b\u1eb1ng c\u00e1ch th\u00eam ho\u1eb7c s\u1eeda \u0111\u1ed5i iface cho giao di\u1ec7n c\u1ee7a b\u1ea1n v\u00e0 giao th\u1ee9c inet6, \u0111\u1ea3m b\u1ea3o \u0111\u1eb7t n\u00f3 th\u00e0nh t\u1ef1 \u0111\u1ed9ng thay v\u00ec t\u0129nh.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"784\" height=\"153\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-89.png\" alt=\"\" class=\"wp-image-1463\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-89.png 784w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-89-300x59-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-89-768x150-1.png 768w\" sizes=\"auto, (max-width: 784px) 100vw, 784px\" \/><\/figure>\n<p>N\u1ebfu b\u1ea1n mu\u1ed1n t\u1eaft \u0111\u1ecba ch\u1ec9 IPv6 SLAAC v\u00e0 thay v\u00e0o \u0111\u00f3 \u0111\u1ecbnh c\u1ea5u h\u00ecnh t\u0129nh \u0111\u1ecba ch\u1ec9 IPv6 ch\u00ednh c\u1ee7a m\u00ecnh (kh\u00f4ng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb), b\u1ea1n c\u00f3 th\u1ec3 s\u1eeda \u0111\u1ed5i nh\u00f3m iface eth0 inet6 b\u1eb1ng c\u00e1ch \u0111\u1eb7t n\u00f3 th\u00e0nh t\u0129nh v\u00e0 th\u00eam \u0111\u1ecba ch\u1ec9 IPv6 ch\u00ednh c\u1ee7a b\u1ea1n trong tham s\u1ed1 \u0111\u1ecba ch\u1ec9 (s\u1eed d\u1ee5ng ti\u1ec1n t\u1ed1 c\u1ee7a \/ 128).<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"673\" height=\"179\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-90.png\" alt=\"\" class=\"wp-image-1464\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-90.png 673w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-90-300x80-1.png 300w\" sizes=\"auto, (max-width: 673px) 100vw, 673px\" \/><\/figure>\n<p><strong>\u0110\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ecba ch\u1ec9 IPv6 b\u1ed5 sung<\/strong><\/p>\n<p>N\u1ebfu b\u1ea1n \u0111\u01b0\u1ee3c g\u00e1n m\u1ed9t ph\u1ea1m vi IPv6 cho Phi\u00ean b\u1ea3n \u0111i\u1ec7n to\u00e1n c\u1ee7a m\u00ecnh, th\u00ec b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1eb7t c\u1ea5u h\u00ecnh c\u00e1c \u0111\u1ecba ch\u1ec9 trong ph\u1ea1m vi n\u00e0y trong nh\u00f3m iface eth0 inet6, \u0111\u1ea3m b\u1ea3o nh\u00f3m n\u00e0y \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh t\u0129nh thay v\u00ec t\u1ef1 \u0111\u1ed9ng. Nhi\u1ec1u d\u00f2ng \u0111\u1ecba ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c cung c\u1ea5p \u0111\u1ec3 \u0111\u1ecbnh c\u1ea5u h\u00ecnh nhi\u1ec1u \u0111\u1ecba ch\u1ec9 IP.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"881\" height=\"198\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-91.png\" alt=\"\" class=\"wp-image-1465\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-91.png 881w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-91-300x67-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-91-768x173-1.png 768w\" sizes=\"auto, (max-width: 881px) 100vw, 881px\" \/><\/figure>\n<p>Trong v\u00ed d\u1ee5 tr\u00ean, h\u00e3y th\u1ef1c hi\u1ec7n c\u00e1c thay th\u1ebf sau:<\/p>\n<ul>\n<li>[ip-address]: \u0110\u1ecba ch\u1ec9 IPv6 m\u00e0 b\u1ea1n mu\u1ed1n c\u1ea5u h\u00ecnh t\u0129nh. B\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn b\u1ea5t k\u1ef3 \u0111\u1ecba ch\u1ec9 n\u00e0o trong ph\u1ea1m vi kh\u1ea3 d\u1ee5ng c\u1ee7a m\u00ecnh. V\u00ed d\u1ee5: trong ph\u1ea1m vi 2001:db8:e001:1b8c::\/64, \u0111\u1ecba ch\u1ec9 2001:db8:e001:1b8c::1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/li>\n<\/ul>\n<ul>\n<li>[prefix]: Ti\u1ec1n t\u1ed1 ph\u1ea3i l\u00e0 64 ho\u1eb7c 56 (t\u00f9y thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc ph\u1ea1m vi IPv6 c\u1ee7a b\u1ea1n).<br \/>Tham s\u1ed1 autoconf (khi \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh 1) cho ph\u00e9p \u0111\u1ecba ch\u1ec9 IPv6 ch\u00ednh \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng c\u1ea5u h\u00ecnh th\u00f4ng qua SLAAC, \u0111\u00e2y l\u00e0 h\u00e0nh vi \u0111\u01b0\u1ee3c \u01b0u ti\u00ean trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p.<\/li>\n<\/ul>\n<p><strong>Thay \u0111\u1ed5i tr\u00ecnh ph\u00e2n gi\u1ea3i DNS<\/strong><\/p>\n<p>Tr\u00ecnh ph\u00e2n gi\u1ea3i DNS l\u00e0 c\u00e1c th\u1ef1c th\u1ec3 ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IPv4 t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ch\u00fang. Theo m\u1eb7c \u0111\u1ecbnh, Phi\u00ean b\u1ea3n \u0111i\u1ec7n to\u00e1n s\u1ebd s\u1eed d\u1ee5ng tr\u00ecnh ph\u00e2n gi\u1ea3i DNS cho trung t\u00e2m d\u1eef li\u1ec7u n\u01a1i n\u00f3 c\u01b0 tr\u00fa. B\u1ea1n c\u00f3 th\u1ec3 thay \u0111\u1ed5i nh\u1eefng \u0111i\u1ec1u n\u00e0y th\u00f4ng qua t\u1ec7p \/etc\/resolv.conf, \u0111\u1eb7t tham s\u1ed1 m\u00e1y ch\u1ee7 t\u00ean cho tr\u00ecnh ph\u00e2n gi\u1ea3i DNS \u01b0a th\u00edch c\u1ee7a b\u1ea1n.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"694\" height=\"218\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-92.png\" alt=\"\" class=\"wp-image-1466\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-92.png 694w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-92-300x94-1.png 300w\" sizes=\"auto, (max-width: 694px) 100vw, 694px\" \/><\/figure>\n<p>Trong v\u00ed d\u1ee5 tr\u00ean, h\u00e3y thay th\u1ebf \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1eb1ng \u0111\u1ecba ch\u1ec9 IP c\u1ee7a tr\u00ecnh ph\u00e2n gi\u1ea3i DNS m\u00e0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng.<\/p>\n<p>Ngu\u1ed3n: https:\/\/techdocs.akamai.com\/cloud-computing\/docs\/network-configuration-using-ifupdown<\/p>\n","protected":false},"excerpt":{"rendered":"<p>G\u00f3i ifupdown l\u00e0 m\u1ed9t ph\u1ea7n m\u1ec1m c\u1ea5u h\u00ecnh m\u1ea1ng c\u0169 h\u01a1n v\u1eabn \u0111\u01b0\u1ee3c Debian v\u00e0 c\u00e1c b\u1ea3n ph\u00e2n ph\u1ed1i Ubuntu c\u0169 h\u01a1n s\u1eed d\u1ee5ng (ch\u1eb3ng h\u1ea1n nh\u01b0 16.04 LTS tr\u1edf v\u1ec1 tr\u01b0\u1edbc). C\u00e1c b\u1ea3n ph\u00e1t h\u00e0nh Ubuntu m\u1edbi h\u01a1n s\u1eed d\u1ee5ng Netplan k\u1ebft h\u1ee3p v\u1edbi systemd-networkd (ho\u1eb7c NetworkManager). C\u00e1c b\u1ea3n ph\u00e1t h\u00e0nh Debian m\u1edbi h\u01a1n<\/p>\n","protected":false},"author":1,"featured_media":35730,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82],"tags":[],"class_list":["post-34921","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-manual-network-configuration-on-a-compute-instance"],"_links":{"self":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts\/34921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/comments?post=34921"}],"version-history":[{"count":1,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts\/34921\/revisions"}],"predecessor-version":[{"id":35731,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts\/34921\/revisions\/35731"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/media\/35730"}],"wp:attachment":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/media?parent=34921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/categories?post=34921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/tags?post=34921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}