The random rantings of a concerned programmer.

Archive for February, 2011

varnishlog filter by client IP address

February 15th, 2011 | Category: Random

Couldn’t figure this one out myself (didn’t help that the Varnish 2.1.4 man pages aren’t synced properly with the code), so after asking around on the Varnish IRC channel, I learned that you can filter varnishlog‘s output by remote IP address using

$ varnishlog -c -o SessionOpen $IP

Really bloody useful when troubleshooting on a production machine >:(


“haha oh shit–!”

February 08th, 2011 | Category: Random

Just got this email from FDC, a server hosting company I’ve used in the past –

Attention FDCServers clients,

Due to the exhaustion of IPv4 space, we are now forced to limit customers to a maximum of 10ips per service going forward. If you already have received more then the 10 IPs, you do not need to return any IPs, however if you are ordering a new service with us, please note you will be limited to 10 free IPs maximum. As well as any older servers will not be allowed any more free additional ips. Additional ips are still available, please contact sales for pricing.

We will be rolling out mass IPv6 ipblocks to all services in all locations shortly as well.

Thank you,

Too bad no one will actually be able to connect to the IPv6 addresses for another 10 years~! Hooray residential ISPs, pushing technology forward.