- Squid keeps listening on IPv6 and gives a 5-second delay based on the default value of the 'dns_retransmit_interval' to its client in accessing internet even when sysctl shows IPv6 is disabled.
The below sysctl command shows IPv6 is disabled as follows.
# sysctl -a net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.all.disable_ipv6 = 1
The below ss command shows squid still listens on IPv6 on tcp 3128 port.
# ss -tulpn | grep squid tcp LISTEN 0 128 :::3128 :::* users:(("squid",pid=3095,fd=11))
- Red Hat Enterprise Linux 7
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