Cannot ping from shell when WAN is 3G/4G Modem

[Michał Obrembski]

I've found that there is some weird problem with pinging from shell. It works on my router with WAN by DOCSIS modem, but i can't ping when modem is connected to LTE only (using non-hilink modem). Quite interesting, DNS resolution works, but pings are all blocked from shell:

root@router:/tmp# ping onet.pl PING onet.pl (213.180.141.140): 56 data bytes ^C --- onet.pl ping statistics --- 2 packets transmitted, 0 packets received, 100% packet loss

pinging local network works, pinging VPN also works. Just WAN ICMP packets are dropped somehow when router is connected via 3G modem.

[Michał Obrembski]

I've also tried to use -I (interface selection parameter in ping) with eth2 (modem interface), no luck.

[pedro]

AFAIK, this is provider issue, not the FreshTomato.

[Michał Obrembski]

Provider issue? why? I cannot only ping from tomato shell, pinging from LAN works correctly

[pedro]

Ah, understood.