[c-nsp] 7513 multilink interface issue

[Todd Shipway]

We have several customers setup with T1's multilinked.  We are running into
a problem with a single multilink member bouncing causing routing issues.
When a single T1 member of a multilink group bounces, traffic to the overall
multilink interface stops and we have to manually shut and no shut the
multilink interface to get traffic flowing again.

Has anyone seen this before and if so, know what the issue may be?