I’ve wanted to use exabgp along with dnsdist to provide anycasted, highly available recursive DNS servers ever since discovering dnsdist.
This is a fourth in blog series about DNS, specifically awesome things that can be done with dnsdist.
I’ve often wished for a way of logging pings when troubleshooting connectivity problems. Today I revisited the problem using fping.
fping and fping6 both have options to run a continuous ping (-l), and when combined with -D to insert the unix timestamp, can log the latency and loss to a destination in 1s increments.
I recently setup IPv6 first-hop redundancy in my colocated environment using Mikrotik and VRRP. It didn’t work the same way I’d come to expect from using it in IPv4 environments and I set out to figure out why.