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[Bug 1614514] Re: netcfg defaults hostname to DHCPv6-provided NTP server address

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This is fixed in netcfg 1.142ubuntu1 already in artful.

** Changed in: netcfg (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1614514

Title:
  netcfg defaults hostname to DHCPv6-provided NTP server address

Status in netcfg package in Ubuntu:
  Fix Released
Status in netcfg source package in Xenial:
  New
Status in netcfg source package in Yakkety:
  New
Status in netcfg source package in Zesty:
  New
Status in netcfg package in Debian:
  Fix Released

Bug description:
  When prompted for a hostname during installation, on my network the
  default offered is always our second NTP server's IPv6 address, which
  it received via stateless DHCPv6.  netcfg seems to be using the wrong
  field as a hostname, in the absence of an explicit DHCP-provided
  hostname.

  Installation log excerpt:

  Aug 18 12:21:26 netcfg[13450]: DEBUG: IPv6 stateless autoconfig requested
  Aug 18 12:21:26 netcfg[13450]: DEBUG: nc_v6_interface_configured(eth0, scope global)
  Aug 18 12:21:26 netcfg[13450]: DEBUG: Running ip addr show eth0 to look for address
  Aug 18 12:21:26 netcfg[13450]: DEBUG: ip line: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq qlen 1000
  Aug 18 12:21:26 netcfg[13450]: DEBUG: ip line:     link/ether fa:ee:bd:a7:4c:0f brd ff:ff:ff:ff:ff:ff
  Aug 18 12:21:26 netcfg[13450]: DEBUG: ip line:     inet6 2001:630:212:252:f8ee:bdff:fea7:4c0f/64 scope global dynamic 
  Aug 18 12:21:26 netcfg[13450]: DEBUG: Configured address found
  Aug 18 12:21:26 netcfg[13450]: DEBUG: ip line:        valid_lft 2592000sec preferred_lft 604800sec
  Aug 18 12:21:26 netcfg[13450]: DEBUG: ip line:     inet6 fe80::f8ee:bdff:fea7:4c0f/64 scope link 
  Aug 18 12:21:26 netcfg[13450]: DEBUG: ip line:        valid_lft forever preferred_lft forever
  Aug 18 12:21:26 netcfg[13450]: DEBUG: Stateless DHCPv6 requested
  Aug 18 12:21:26 netcfg[13450]: WARNING **: Started DHCPv6 client; PID is 13497
  Aug 18 12:21:26 dhclient[13497]: Created duid \000\003\000\001\372\356\275\247L\017.
  Aug 18 12:21:27 dhclient[13497]: XMT: Info-Request on eth0, interval 1080ms.
  Aug 18 12:21:27 dhclient[13497]: RCV: Reply message on eth0 from fe80::8a5a:92ff:fecd:8da7.
  Aug 18 12:21:28 netcfg[13450]: DEBUG: DHCPv6 line: nameserver[0] 2001:630:212:200::d:0
  Aug 18 12:21:28 netcfg[13450]: DEBUG: DHCPv6 line: nameserver[1] 2001:630:212:200::d:1
  Aug 18 12:21:28 netcfg[13450]: DEBUG: DHCPv6 line: nameserver[2] 2001:630:212:200::d:2
  Aug 18 12:21:28 netcfg[13450]: DEBUG: DHCPv6 line: Domain search list[0] cl.cam.ac.uk.
  Aug 18 12:21:28 netcfg[13450]: DEBUG: DHCPv6 line: NTP server[0] 2001:630:212:200::123:1a
  Aug 18 12:21:28 netcfg[13450]: DEBUG: DHCPv6 line: NTP server[1] 2001:630:212:200::123:1b
  Aug 18 12:21:28 netcfg[13450]: DEBUG: DHCPv6 line: NTP server[2] 2001:630:212:200::123:1c
  Aug 18 12:21:28 netcfg[13450]: DEBUG: DHCPv6 line: end
  Aug 18 12:21:28 netcfg[13450]: DEBUG: Trying IPv4 autoconfig as well
  Aug 18 12:21:28 netcfg[13450]: WARNING **: Started DHCP client; PID is 13502
  Aug 18 12:21:29 dhclient[13502]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 1 (xid=0xce07ab1b)
  Aug 18 12:21:30 dhclient[13502]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 1 (xid=0xce07ab1b)
  Aug 18 12:21:30 dhclient[13502]: DHCPREQUEST of 128.232.81.81 on eth0 to 255.255.255.255 port 67 (xid=0x1bab07ce)
  Aug 18 12:21:30 dhclient[13502]: DHCPOFFER of 128.232.81.81 from 128.232.80.7
  Aug 18 12:21:30 dhclient[13502]: DHCPACK of 128.232.81.81 from 128.232.80.7
  Aug 18 12:21:30 dhclient[13502]: bound to 128.232.81.81 -- renewal in 1780 seconds.
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Reading NTP servers from DHCP info
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Read NTP server 128.232.0.9
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Read NTP server 128.232.0.8
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Read NTP server 128.232.0.7
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Read NTP server 128.232.96.152
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Reading nameservers from /etc/resolv.conf
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Read nameserver 128.232.1.1
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Read nameserver 128.232.1.2
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Read nameserver 128.232.1.3
  Aug 18 12:21:32 netcfg[13450]: DEBUG: State is now 1
  Aug 18 12:21:32 netcfg[13450]: DEBUG: State is now 2
  Aug 18 12:21:32 netcfg[13450]: DEBUG: State is now 5
  Aug 18 12:21:32 netcfg[13450]: DEBUG: Defaulting hostname to provided DHCP hostname

  ...and then the installer prompts me for a hostname with a pre-filled
  default of "2001:630:212:200::123:1b".

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