Hello,
I've recently started having network issues on Bookworm. I re-installed
Debian
and re-upgraded to Bookworm while preserving my /home and /boot
partitions which
solved the issue of being totally unable to connect, but I have since
noticed
that I am unable to connected to anything across IPv6, which may be the same
issue resurfacing, just not as badly because the installation has had
time to
establish IPv4 connections..?
I have what should be a standard IP setup for a system upgraded from
Bullseye
netinst media to bookworm: no firewalls, no proxies. Just a desktop on an
ordinary residential LAN, connected by ethernet port. I have a WLAN card but
don't use it, I haven't configured it.
I haven't experienced similar issues on Windows and Android devices on the
same LAN, so I'm thinking it's an issue with my Debian Machine.
I can't get any DNS, ICMP or other protocol requests to reach even
localhost,
let alone my router. I have pretty limited knowledge about networking.
How can I fix the IPv6 configuration on my machine?
$ host 04:92:26:d1:fa:77
Host 04:92:26:d1:fa:77 not found: 3(NXDOMAIN)
$ host -6 04:92:26:d1:fa:77
;; communications error to ::1#53: connection refused
;; communications error to ::1#53: connection refused
;; no servers could be reached
$ host -6 foo
;; communications error to ::1#53: connection refused
;; communications error to ::1#53: connection refused
;; no servers could be reached
$ dig -6 localhost
;; communications error to ::1#53: connection refused
;; communications error to ::1#53: connection refused
;; communications error to ::1#53: connection refused
Inspecting the network with WireShark while running DNS queries with
`dig -6`
shows nothing whatsoever.
$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp6s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000
link/ether 04:92:26:d1:fa:77 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.96/24 brd 10.0.0.255 scope global dynamic noprefixroute
enp6s0
valid_lft 50579sec preferred_lft 50579sec
inet6 2001:8003:234d:a600:d010:41cc:f0bc:48f3/64 scope global
temporary dynamic
valid_lft 4127sec preferred_lft 4127sec
inet6 2001:8003:234d:a600:692:26ff:fed1:fa77/64 scope global
dynamic mngtmpaddr noprefixroute
valid_lft 4127sec preferred_lft 4127sec
inet6 fe80::692:26ff:fed1:fa77/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: wlp7s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state
DOWN group default qlen 1000
link/ether a2:e1:fa:5c:61:3f brd ff:ff:ff:ff:ff:ff permaddr
d0:37:45:91:cf:4d
$ cat /etc/hosts
127.0.0.1 localhost
127.0.1.1 <redacted>
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
Select output of lspci:
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
07:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8192EE
PCIe Wireless Network Adapter
Select entries from dpkg-query -l:
ii avahi-daemon 0.8-6+b1 amd64 Avahi
mDNS/DNS-SD daemon
ii bind9-host 1:9.18.8-1 amd64 DNS Lookup
Utility
ii bind9-libs:amd64 1:9.18.8-1 amd64
Shared Libraries used by BIND 9
ii dns-root-data 2021011101 all DNS
root data including root zone and DNSSEC key
ii dnsmasq-base 2.87-1.1 amd64 Small
caching DNS proxy and DHCP/TFTP server
ii glib-networking:amd64 2.74.0-1 amd64
network-related giomodules for GLib
ii glib-networking:i386 2.74.0-1 i386
network-related giomodules for GLib
ii glib-networking-common 2.74.0-1
all network-related giomodules for GLib - data files
ii glib-networking-services 2.74.0-1
amd64 network-related giomodules for GLib - D-Bus services
ii iputils-ping 3:20221126-1 amd64 Tools to
test the reachability of network hosts
ii ifupdown 0.8.39+b1 amd64 high level
tools to configure network interfaces
ii iproute2 6.0.0-1+b1 amd64 networking
and traffic control tools
ii libavahi-core7:amd64 0.8-6+b1 amd64
Avahi's embeddable mDNS/DNS-SD library
ii libdns-export1110 1:9.11.19+dfsg-2.1 amd64
Exported DNS Shared Library
ii libip4tc2:amd64 1.8.8-1 amd64
netfilter libip4tc library
ii libip6tc2:amd64 1.8.8-1 amd64
netfilter libip6tc library
ii libgeoip1:amd64 1.6.12-9 amd64
non-DNS IP-to-country resolver library
ii libkf5kiocore5:amd64 5.100.0-2 amd64
resource and network access abstraction (KIO core library)
ii libkf5kiofilewidgets5:amd64 5.100.0-2
amd64 resource and network access abstraction (KIO file widgets
library)
ii libkf5kiogui5:amd64 5.100.0-2 amd64
resource and network access abstraction (KIO gui library)
ii libkf5kiontlm5:amd64 5.100.0-2 amd64
resource and network access abstraction (KIO NTLM library)
ii libkf5kiowidgets5:amd64 5.100.0-2
amd64 resource and network access abstraction (KIO widgets library)
ii libnet-dbus-perl 1.2.0-1+b3 amd64 Perl
extension for the DBus bindings
ii libnet-http-perl 6.22-1 all
module providing low-level HTTP connection client
ii libnet-smtp-ssl-perl 1.04-2 all
Perl module providing SSL support to Net::SMTP
ii libnet-ssleay-perl:amd64 1.92-2+b1
amd64 Perl module for Secure Sockets Layer (SSL)
ii libnetfilter-conntrack3:amd64 1.0.9-2
amd64 Netfilter netlink-conntrack library
ii libnetpbm11:amd64 2:10.97.00-2 amd64
Graphics conversion tools shared libraries
ii libnettle8:amd64 3.8.1-2 amd64 low
level cryptographic library (symmetric and one-way cryptos)
ii libnettle8:i386 3.8.1-2 i386 low
level cryptographic library (symmetric and one-way cryptos)
ii libnfnetlink0:amd64 1.0.2-2 amd64
Netfilter netlink library
ii libnl-3-200:amd64 3.7.0-0.2+b1 amd64
library for dealing with netlink sockets
ii libnl-genl-3-200:amd64 3.7.0-0.2+b1
amd64 library for dealing with netlink sockets - generic netlink
ii libnl-route-3-200:amd64 3.7.0-0.2+b1
amd64 library for dealing with netlink sockets - route interface
ii libnss-mdns:amd64 0.15.1-3 amd64 NSS
module for Multicast DNS name resolution
ii libproxy1-plugin-networkmanager:amd64
0.4.18-1 amd64 automatic proxy
configuration management library (Network Manager plugin)
ii libqt5network5:amd64 5.15.6+dfsg-5 amd64
Qt 5 network module
ii libwireshark-data 4.0.1-1 all
network packet dissection library -- data files
ii libwireshark16:amd64 4.0.1-1 amd64
network packet dissection library -- shared library
ii libwiretap13:amd64 4.0.1-1 amd64
network packet capture library -- shared library
ii libwsutil14:amd64 4.0.1-1 amd64
network packet dissection utilities library -- shared library
ii libxtables12:amd64 1.8.8-1 amd64
netfilter xtables library
ii netbase 6.4 all Basic TCP/IP
networking system
ii netcat-traditional 1.10-47 amd64
TCP/IP swiss army knife
ii netpbm 2:10.97.00-2 amd64 Graphics
conversion tools between image formats
ii network-manager 1.40.6-1 amd64
network management framework (daemon and userspace tools)
ii tcpdump 4.99.1-4+b1 amd64 command-line
network traffic analyzer
ii traceroute 1:2.1.0-3 amd64 Traces the
route taken by packets over an IPv4/IPv6 network
ii update-inetd 4.51 all inetd
configuration file updater
ii wireshark 4.0.1-1 amd64 network
traffic analyzer - meta-package
ii wireshark-common 4.0.1-1 amd64
network traffic analyzer - common files
ii wireshark-qt 4.0.1-1 amd64 network
traffic analyzer - Qt version
