4 ms·
If you block everything with IPv4, things stop working too: you have to allow at least some ICMP (for "packet too big" path MTU discovery), otherwise you will h
by cesarb 9y ago
If you block everything with IPv4, things stop working too: you have to allow at least some ICMP (for "packet too big" path MTU discovery), otherwise you will have hard-to-diagnose issues.
- jsjohnst 9y agoLess an issue with IPv4 in a consumer sense because the device blocking the ICMP is also commonly doing NAT too.