Package: isc-dhcp-server Version: 4.3.5-3+deb9u1 Severity: normal Dear Maintainer,
*** Reporter, please consider answering these questions, where appropriate *** Hi, I was wondering why the DHCP server still binds to the IPv6 address, too. I have two internal IPv4 addresses on the eth0 and eth0:0 interface and one IPv6 address. ------------ root@pdns:/etc/default# cat /etc/default/isc-dhcp-server # Defaults for dhcp initscript # sourced by /etc/init.d/dhcp # installed at /etc/default/isc-dhcp-server by the maintainer scripts # # This is a POSIX shell fragment # # On what interfaces should the DHCP server (dhcpd) serve DHCP requests? # Separate multiple interfaces with spaces, e.g. "eth0 eth1". INTERFACESv4="eth0 eth0:0" OPTIONS="-4" ------------------- root@pdns:/etc/default# lsof -i -P|grep dhcp dhcpd 1479 root 8u IPv4 20538 0t0 UDP *:67 dhcpd 1479 root 20u IPv4 20522 0t0 UDP *:59311 dhcpd 1479 root 21u IPv6 20523 0t0 UDP *:61725 *** End of the template - remove these template lines *** --------- Why does it bind to the IPv6 address. And why does it need a second IPv4 binding to Port 59311 --------- root@pdns:/etc/default# ps awux|grep dhcpd root 1479 0.0 0.2 14212 9708 ? Ss 18:30 0:00 /usr/sbin/dhcpd -q -4 -cf /etc/dhcp/dhcpd.conf -pf /var/run/dhcpd.pid --------- I am little bit puzzled about that behavior. Is it a bug or a 'feature' i didn't recognize in the man pages. Greetings and thanks, Tobias -- System Information: Debian Release: 9.4 APT prefers stable APT policy: (500, 'stable') Architecture: i386 (i686) Kernel: Linux 4.9.0-6-686-pae (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages isc-dhcp-server depends on: ii debconf [debconf-2.0] 1.5.61 ii debianutils 4.8.1.1 ii libc6 2.24-11+deb9u3 ii libdns-export162 1:9.10.3.dfsg.P4-12.3+deb9u4 ii libirs-export141 1:9.10.3.dfsg.P4-12.3+deb9u4 ii libisc-export160 1:9.10.3.dfsg.P4-12.3+deb9u4 ii lsb-base 9.20161125 Versions of packages isc-dhcp-server recommends: ii isc-dhcp-common 4.3.5-3+deb9u1 ii policycoreutils 2.6-3 Versions of packages isc-dhcp-server suggests: pn isc-dhcp-server-ldap <none> ii policykit-1 0.105-18 -- Configuration Files: /etc/dhcp/dhcpd.conf changed [not included] /etc/init.d/isc-dhcp-server changed [not included] -- debconf information: isc-dhcp-server/interfaces:
