Comment 1 for bug 1893998

This bug extends in impact into the overall dashboard, as a number of fields use expressions such as {dns_name=~"$host"}. Especially when dns_name isn't available on these fields (and thus $host becomes ""), this generates data of limited use - basically everything gets lumped together.

Either we need to always ensure dns_name is present (e.g. stuffing an IP in if DNS names aren't available), or perhaps we need to split on some other identifier?