Mwan3: Suggestion for improvement (DNS-check)

For Developers
1

I had a special scenario in using wwan3 for failover from WAN to WWAN, in that the ping on WAN worked, bu the upstream DNS-resolver did not.
So no failover ocurred, unfortunately, although some processes on my router failed because of missing DNS.

May be, it is a good idea to add a DNS-check to mwan3.

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2

You can use custom track_method and/or check by domain name.

1 Like
3

Thanx, looks like a path to go, to patch
/usr/sbin/mwan3track

4

Perhaps you don't need to patch anything.
Ping/HTTP check by domain name should include DNS lookup.
Using DNS forwarding with noresolv can help to avoid caching.

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