I installed isc-dhcp-client-noddns from trusty-proposed and I don't get
the two random extra high ports anymore:
Before:
# dpkg -l | grep isc-dhcp-
ii isc-dhcp-client 4.2.4-7ubuntu12.9 amd64
ISC DHCP client
ii isc-dhcp-common 4.2.4-7ubuntu12.9 amd64
common files used by all the isc-dhcp* packages
# netstat -anputa | grep -i dhclient
udp 0 0 0.0.0.0:68 0.0.0.0:*
716/dhclient
udp 0 0 0.0.0.0:42496 0.0.0.0:*
716/dhclient
udp6 0 0 :::7781 :::*
716/dhclient
After:
# dpkg -l | grep isc-dhcp-
ii isc-dhcp-client 4.2.4-7ubuntu12.10
amd64 ISC DHCP client
ii isc-dhcp-client-noddns 4.2.4-7ubuntu12.10
amd64 Dynamic DNS (DDNS) disabled DHCP client
ii isc-dhcp-common 4.2.4-7ubuntu12.10
amd64 common files used by all the isc-dhcp* packages
# netstat -anputa | grep -i dhclient
udp 0 0 0.0.0.0:68 0.0.0.0:*
13411/dhclient
And if I remove the isc-dhcp-client-noddns package, I get the 2 random ports
again:
# dpkg -l | grep isc-dhcp-
ii isc-dhcp-client 4.2.4-7ubuntu12.10
amd64 ISC DHCP client
ii isc-dhcp-common 4.2.4-7ubuntu12.10
amd64 common files used by all the isc-dhcp* packages
# netstat -anputa | grep -i dhclient
udp 0 0 0.0.0.0:68 0.0.0.0:*
565/dhclient
udp 0 0 0.0.0.0:63510 0.0.0.0:*
565/dhclient
udp6 0 0 :::44100 :::*
565/dhclient
Looks good to me.
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https://bugs.launchpad.net/bugs/1176046
Title:
isc-dhcp dhclient listens on extra random ports
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