dhcpd use udp socket on unknown port

[Veovis]

Hi,

I discover something weird with my dhcp server.
It works completely fine, but there are 2 udp socket that seems useless but open.

# netstat -nlp | grep dhcp
udp 0 0 0.0.0.0:67 0.0.0.0:* 16041/dhcpd
udp 0 0 0.0.0.0:59843 0.0.0.0:* 16041/dhcpd
udp6 0 0 :::25470 :::* 16041/dhcpd
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 16041/dhcpd

The dhcpd version:
[ebuild R ] net-misc/dhcp-4.2.2-r2 USE="client ipv6 server ssl vim-syntax -ldap (-selinux)" 8,559 kB

I'm OK with udp port 67 and raw port, but what are the 2 others ?
I observed that on both x86 and x64 platform.