On Wed, 21 Dec 2022, Brendan Kearney wrote:

Subject: [Swan] Tunnel is up, but getting udp port xxxx unreachable

connecting client is seen replying with ICMP udp port unreachable messages:

VPN Server config:
conn rac
    leftsubnet=0.0.0.0/0
    right=%any
    rightaddresspool=192.168.152.50-192.168.152.99

[...]

VPN Client config:
conn rac
    left=%defaultroute
    leftsubnet=0.0.0.0/0
    leftmodecfgclient=yes
    # Remote Definitions
    right=host.domain.tld
    rightid=192.168.152.254
    rightsubnet=0.0.0.0/0

You are handing out IPs in the same /24 as the LAN itself? That might
cause problems if machines in the LAN are a true /24. You would need
proxyarp and what not and it complicates things.

I'd recommend splitting of the addresspool into a real seperate network.

Paul
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