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Working hack for eth1 DHCP client issue

Finally I took the time and got a hack working for the eth1 not getting a DHCP address from an ISP. I have posts back YEARS with things I/others have tried. I finally just hacked a cron job to renew my eth1 DHCP address every minute. This is finally a work around for a long running issue.

So... if your cable modem reboots or your ISP does maintenance, and you lose your IP on eth1...

Create a file: /etc/crontab.custom_eth1_renew

# local hacks
# run dhcpc to renew IP for eth1 interface in case of cable modem outage.
* * * * * root /var/mdw/scripts/dhcpc renew eth1

Reboot UTM

This will run the dhcpc command every minute to renew the IP address for eth1

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0 Bob Blank over 3 years ago

BTW - here is an original thread with several other options like running your modem in Router mode (causes double NATing) or a small home router in front of your UTM. I finally tested the timeout configs and it made no difference. community.sophos.com/.../dhcp-issues-on-external-interface-with-isp
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0 Bob Blank over 3 years ago

BTW - here is an original thread with several other options like running your modem in Router mode (causes double NATing) or a small home router in front of your UTM. I finally tested the timeout configs and it made no difference. community.sophos.com/.../dhcp-issues-on-external-interface-with-isp
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