I think there are two issues:
1) You disconnect and resolv.conf gets cleared. This is normal. When you are
disconnected, you can't use nameservers anyway.
In resolv.conf you should have at the top
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
This is the warning that resolv.conf will be cleared and/or overwritten
automatically.
2) You connect again and resolv.conf is *not* updated with the new
nameservers. This *is* a bug! I think i have also seen this a few times
with my USB 3G modem.
Did i get it right, the problem is 2) ?
Would changing the bug title to "resolv.conf empty after connecting to mobile
internet" be okay?
** Also affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: New => Invalid
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resolv.conf get cleared everytime
https://bugs.launchpad.net/bugs/486911
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