[Linux] Ubuntu 20.04 Setting apt Only Allow IPv4
Situation
When Use apt update, Can Not Resolve IPv6 Address.
Solution
apt With -o
Use
-o Acquire::ForceIPv4=true update
-o Acquire::ForceIPv6=true update
Setting APT Conf
Edit
/etc/apt/apt.conf.d/99force-ipv4
ADD
Acquire::ForceIPv4 "true";
<- IPv4
Or
Acquire::ForceIPv6 "true";
<- IPv6