Hi, I have a problem with squid and iptables. I have to use "TCPMSS --clamp-mss-to-pmtu" to adapt the mtu with the ISP requirement, but since I have installed the squid proxy, it seems like the iptables chains below doesn't work. $iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN / -j TCPMSS --clamp-mss-to-pmtu $iptables -A OUTPUT -p tcp --tcp-flags SYN,RST SYN / -j TCPMSS --clamp-mss-to-pmtu Some websites still are unaccessible. Is there a way to make it work? thanks