Containers can't ping out on default bridge

Docker Engine General
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Hi Folks,

I’m feeling a little extra dumb at the moment. I’m trying to use the default bridge on my docker host to build containers and get out, but for some reason, my containers can’t ping out on that default bridge. I can see that my containers can ping the bridge gateway… but, nothing beyond that.

IP forwarding seems to be on:

cat /proc/sys/net/ipv4/ip_forward

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And all of the iptables rules look normal… I’m just at a loss here.

Any clues?