i have recently installed debian 8.x LXC container on my 4.x Proxmox
server. however i found a strange problem. my container can ping local net
without any problem. like my container ip is 10.51.100.134 so i can
10.51.100.8 and other nodes successfully. however when i try to ping google
i can not make it work. i am sure that nothing is blocking the traffic.
even i can see echo reply packet on Proxmox host and on firewall too that
nothing is blocking the traffice but on Guest LXC container it shows that
INTERNET is not working here is the result of my proxmox host.

18:32:48.821877 IP 10.51.100.134 > 110.93.194.226: ICMP echo request, id
1307, seq 7, length 64
18:32:48.822999 IP 110.93.194.226 > 10.51.100.134: ICMP echo reply, id
1307, seq 7, length 64
18:32:49.829851 IP 10.51.100.134 > 110.93.194.226: ICMP echo request, id
1307, seq 8, length 64
18:32:49.831079 IP 110.93.194.226 > 10.51.100.134: ICMP echo reply, id
1307, seq 8, length 64
18:32:50.837884 IP 10.51.100.134 > 110.93.194.226: ICMP echo request, id
1307, seq 9, length 64
18:32:50.838963 IP 110.93.194.226 > 10.51.100.134: ICMP echo reply, id
1307, seq 9, length 64
18:32:51.845981 IP 10.51.100.134 > 110.93.194.226: ICMP echo request, id
1307, seq 10, length 64
18:32:51.847082 IP 110.93.194.226 > 10.51.100.134: ICMP echo reply, id
1307, seq 10, length 64
18:32:52.853941 IP 10.51.100.134 > 110.93.194.226: ICMP echo request, id
1307, seq 11, length 64
18:32:52.855016 IP 110.93.194.226 > 10.51.100.134: ICMP echo reply, id
1307, seq 11, length 64
18:32:53.862228 IP 10.51.100.134 > 110.93.194.226: ICMP echo request, id
1307, seq 12, length 64
18:32:53.863357 IP 110.93.194.226 > 10.51.100.134: ICMP echo reply, id
1307, seq 12, length 64

you guys can see my proxmox box can receive echo reply but my guest doens't
show it.

i tried everything. i checked firewall rules and enable forwarding. but
nothing helped. can anyone please suggest something

Thanks,
Yousuf
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