@Kir Kolyshkin
Adding net.ipv4.conf.all.forwarding=1 to sysctl.conf solves the problem.
The problem is though that in /ets/sysctl.conf it says :
# Uncomment the next line to enable packet forwarding for IPv4 #net.ipv4.conf.default.forwarding=1
however uncommenting that line does not enable packet forwarding for IPv4
@Kir Kolyshkin
Adding conf.all. forwarding= 1
net.ipv4.
to sysctl.conf solves the problem.
The problem is though that in /ets/sysctl.conf it says :
# Uncomment the next line to enable packet forwarding for IPv4 conf.default. forwarding= 1
#net.ipv4.
however uncommenting that line does not enable packet forwarding for IPv4