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The symptom was that interfaces on my router were not obtaining DHCP addresses, and the workaround was to specify subnets in the ACL, vs a permit any. Same symptom, same fix as OP. Thanks.
I can confirm this resolved the same issue I was seeing on my ISR 4461, running isr4400v2-universalk9.17.16.01a.SPA.bin.To this point I had been defaulting the interface config (including removing ip nat outside) and reapplying it via a daily kron jo...
Finally found the "fix" for this. I had to specify the inside NAT subnets in the access-list (instead of 0.0.0.0 - any any) which was applied to a route-map controlling the NAT's global address.ip nat inside source route-map ISP1_Spectrum interface ...
Hi.I know I'm raising this from the dead, but I'm experiencing the same issue with both ISP interfaces on my ISR 4451X. Both are DHCP enabled, and both will at certain points, with random frequency, stop acquiring an IPv4 address from the provider. ...
