piper11@feddit.orgtoSelfhosted@lemmy.world•[SOLVED] Weird (to me) networking issue - can you help?English
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4 months agoIn scenario 1, the server is technically a router between the 11 and the 10 subnet. There is a sysctl that enables forwarding (i’m on the phone and can’t look it up right now). This must be enabled.
In your second scenario, the server appears to regard its subnet 11 address as just another address it has and replies.
No need, that’s why we have the Don’t Fragment bit in the IP header