Yes, I did so.
This was one of the first thougths I had when failing to resolve DNS names.
EDIT :
I've verified Resolving within my chroot (made with schroot for user-switching to havp).
"nslookup domain.ext" within chroot works as expected (like without schroot I get the domain.ext resolved to ip1.ip2.ip3.ip4).
"ping domain.ext" returns "ping: unknown host domain.ext"
"ping ip1.ip2.ip3.ip4" returns "ping: icmp open socket: Operation not permitted".
Using a browser with havp as proxy:
Entering ip-address works like a charm.
Entering a DNS-name "domain.ext" or "www.domain.ext" shows in browser "HAVP could not open Template! Check errorlog and config!" and errorlog states "[date time] Could not resolve hostname (
http://www.domain.ext)".
Using browser from same client or from gateway without HAVP works as expected.
Resolving
http://www.domain.ext from gateway works with nslookup, ping and browser also leads to successfull display of webpage.
EDIT #2 : Solved the problem
I simply forgot to copy some files from /lib/ and /usr/lib/ to my chroot.
ldd did not mention them.