On 28/05/2021 00:08, Antonio Quartulli wrote:

Can you please share the full client log with verb 4?

PUSH: Received control message: 'PUSH_REPLY,topology subnet,socket-flags TCP_NODELAY,route-gateway 10.0.0.1,route 10.0.0.0 255.255.255.0,route 10.0.5.0 255.255.255.0,route 10.0.2.0 255.255.255.0 10.0.0.2,ifconfig 10.0.0.10 255.255.255.0,peer-id 0'

...

TUN/TAP device vpn opened

do_ifconfig, ipv4=1, ipv6=0

net_iface_mtu_set: mtu 1500 for e

net_iface_up: set vpn up

net_addr_v4_add: 10.0.0.10/24 dev e

net_route_v4_add: 10.0.0.0/24 via 10.0.0.1 dev [NULL] table 0 metric -1

net_route_v4_add: 10.0.5.0/24 via 10.0.0.1 dev [NULL] table 0 metric -1

sitnl_send: rtnl: generic error (-101): Network is unreachable

ERROR: Linux route add command failed

net_route_v4_add: 10.0.2.0/24 via 10.0.0.2 dev [NULL] table 0 metric -1

sitnl_send: rtnl: generic error (-101): Network is unreachable

ERROR: Linux route add command failed


Is this enough?


The network unreachable error should not be triggered by the absence of
the 'src' param.

on 2.5 client just after openvpn start:

% ip r show dev vpn
10.0.0.0/24 via 10.0.0.1


# s ip r add 10.0.2.0/24 via 10.0.0.2 dev vpn

Error: Nexthop has invalid gateway.


# ip r replace to 10.0.0.0/24 src 10.0.0.10 dev vpn

# ip r add 10.0.2.0/24 via 10.0.0.2 dev vpn


--
sergio.


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