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Quorten Blog 1

First blog for all Quorten's blog-like writings

Interesting. Want to reconfigure your system to resolve IPv4 addresses before IPv6? This may be necessary due to firewall rules to avoid slowness from IPv6 timeouts. Here’s how.

cat >/etc/gai.conf <<EOF
label       ::1/128        0
label       ::/0           1
label       2002::/16      2
label       ::/96          3
label       ::ffff:0:0/96  4
precedence  ::1/128        50
precedence  ::/0           40
precedence  2002::/16      30
precedence  ::/96          20
precedence  ::ffff:0:0/96  100
EOF

20180608/DuckDuckGo red hat resolv ipv4 address in preference of ipv6
20180608/DuckDuckGo centos resolv ipv4 address in preference of ipv6
20180608/https://askubuntu.com/questions/32298/prefer-a-ipv4-dns-lookups-before-aaaaipv6-lookups
20180608/https://wiki.vpsget.com/index.php/Prefer_IPv4over_ipv6._How_to_set_ipv4_precedence