Commit Graph

192 Commits

Author SHA1 Message Date
Michael Stapelberg 8c55c5ba44 dhcp4: switch to github.com/rtr7/dhcp4
All existing DHCPv4 packages I looked at were unappealing for one reason or
another, so we’re now using a little helper to glue github.com/google/gopacket
and github.com/mdlayher/raw together, which suffices for our use-case and gives
us more control.
2018-11-21 08:18:58 +01:00
Michael Stapelberg 4288adec69 dns: don’t let clients override the hostname
fixes #11
2018-10-22 21:43:41 +02:00
Michael Stapelberg 0bbc1d923d refactor replayer code into pcapreplayer package 2018-10-22 21:04:35 +02:00
Michael Stapelberg e01a38ff78 commit debug statements 2018-10-22 18:58:40 +02:00
Michael Stapelberg 2e8e0daa0a implement TCP MSS clamping (for non-ethernet uplinks)
We didn’t have a need to clamp the TCP Maximum Segment Size (MSS) up until now,
because fiber7 uses an MTU of 1500.

Because Path MTU discovery is often broken on the internet, it’s best practice
to limit the Maximum Segment Size (MSS) of each TCP connection, achieving the
same effect (but only for TCP connections).

This change is beneficial when running router7 behind a non-ethernet uplink,
such as a Fritz!Box cable modem.

This has no adverse effect on fiber7: after clamping, the MSS is still 1440, as
without clamping.
2018-10-22 18:54:25 +02:00
Michael Stapelberg c037bf9c5f dhcp4d: fix panic when receiving unsupported requests 2018-10-22 18:39:25 +02:00
insomniac cfbf52db6e dhcp6: update after changes in insomniacslk/dhcp (#10) 2018-10-16 08:03:45 +02:00
Pablo Mazzini 81894ba0b3 dhcp6: simplify PD obtention (#9) 2018-10-11 14:29:22 +02:00
Michael Stapelberg f606e70250 dhcp4d: respect broadcast bit
Mac’s Internet Recovery DHCP client requires broadcast responses and will ignore
unicast responses outright.
2018-10-07 17:36:00 +02:00
Philipp Hug aa404c3c54 Request nameserver, router and netmask as it might not be automatically returned by dhcp server. (#7) 2018-09-05 10:06:31 -06:00
Michael Stapelberg 447f1779e2 dhcp6: update for breaking upstream changes
see https://github.com/insomniacslk/dhcp/pull/81
2018-09-05 08:39:35 +02:00
Michael Stapelberg b03596f1c5 nftables: use stateful object counters
This way, we can atomically get and reset them.

fixes https://github.com/rtr7/router7/issues/3
2018-08-08 23:15:21 +02:00
Michael Stapelberg ad779c3665 dhcp6: update for breaking upstream changes 2018-08-05 11:45:03 +02:00
Michael Stapelberg 5a5a748b9f dnsd: don’t serve expired leases
fixes #6
2018-08-05 11:30:58 +02:00
Michael Stapelberg daa14845ab netconfig: plug fd leak by closing the netlink handle
fixes #4
2018-07-22 23:07:23 +02:00
Michael Stapelberg c5e5a0eee0 radvd: gather details about the interface on SIGUSR1
The interface might have a new MAC address (if radvd was started before netconfigd).
2018-07-16 22:46:49 +02:00
Michael Stapelberg 49a59779f5 dhcp4d: don’t offer expired leases 2018-07-15 18:33:11 +02:00
Michael Stapelberg 3282dc5675 netconfig: GetRule filtering is not supported by Linux 4.4.0 (trusty) 2018-07-14 20:53:15 +02:00
Michael Stapelberg bfa16c559f dnsmasq: gracefully handle temporarily not existing ready files 2018-07-14 16:42:50 +02:00
Michael Stapelberg 3afe757a34 notify: gracefully handle vanishing processes 2018-07-14 16:36:51 +02:00
Michael Stapelberg b347ed74c5 update import paths 2018-07-09 08:54:04 +02:00
Michael Stapelberg 984e8802f7 dhcp6: log XIDs when they differ
Encountering this message can be perfectly normal, e.g. in a high-availability
setup, where two DHCP servers answer to your requests.
2018-07-03 17:37:25 +02:00
Michael Stapelberg b05fd74006 dhcp4: increase timeout to 10s 2018-07-03 17:37:17 +02:00
Michael Stapelberg 86f5433cbb dhcp6: correctly clear previous error 2018-06-29 12:02:16 +02:00
Michael Stapelberg ff7aa8f2cb add copyright notices 2018-06-28 20:08:23 +02:00
Michael Stapelberg 2b3cf0bf61 captured: use multilisten 2018-06-28 20:08:23 +02:00
Michael Stapelberg 4c7741a337 add backupd 2018-06-26 18:01:50 +02:00
Michael Stapelberg 89e1276ad4 dns: simplify resolving code 2018-06-26 09:33:23 +02:00
Michael Stapelberg 8e95e25442 radvd: announce link-local ipv6 address for DNS 2018-06-26 09:04:05 +02:00
Michael Stapelberg 10df129c1f dns: listen on all private IP addresses 2018-06-26 08:53:20 +02:00
Michael Stapelberg 08249aec6a dns: resolve localhost locally 2018-06-25 20:24:02 +02:00
Michael Stapelberg 60de127991 Describe all packages and binaries. 2018-06-25 20:12:51 +02:00
Michael Stapelberg a881f6b61e cut down on test noise 2018-06-24 12:06:40 +02:00
Michael Stapelberg ae15230da3 dhcp4d: log in leases callback 2018-06-24 11:56:39 +02:00
Michael Stapelberg 5a07d6696d split integration tests into multiple packages
This makes them complete more quickly (because they are run in parallel) and
invalidates only the cache for the integration test I’m working on, not for all
of them.
2018-06-24 11:46:49 +02:00
Michael Stapelberg 2ff269bf67 unflake integration: use different interface name in DHCPv6 test 2018-06-24 08:33:39 +02:00
Michael Stapelberg c96c683e43 dns: send NXDOMAIN for non-existant local names 2018-06-23 22:15:35 +02:00
Michael Stapelberg 3886367a32 remove TODOs: the sysctls have reasonable defaults 2018-06-23 20:34:42 +02:00
Michael Stapelberg bf2c12a69d netconfigd: export ipv4/ipv6 packet/bytes counters on :8066 2018-06-23 19:56:34 +02:00
Michael Stapelberg 3ba84074c7 dhcp4d: send replies as unicast using raw sockets
Preferring unicast over multicast (which hogs a lot of airtime on WiFi networks)
is a best practice.

Some device/access point vendor combinations even seem to entirely eat (some?)
broadcast traffic (sometimes), e.g. my Apple iPhone SE/Ubiquiti UAP-AC-HD, so
that using unicast is required for reliable WiFi.
2018-06-23 17:46:53 +02:00
Michael Stapelberg 301d4c0d00 dhcp4d: always set broadcast flag for DHCPOFFERs
We always broadcast them, so we should signal that.
2018-06-22 18:35:23 +02:00
Michael Stapelberg 37bf17e1b7 make binaries cope with Squashfs root 2018-06-22 17:59:23 +02:00
Michael Stapelberg 5e11eae951 fix dhcp4d_test for larger pool 2018-06-19 09:46:29 +02:00
Michael Stapelberg 957e4de03a no-op: only one branch results in DHCPNAK 2018-06-18 19:29:58 +02:00
Michael Stapelberg 34d494b85c dhcp4d: increase lease range to cover existing leases 2018-06-18 19:29:42 +02:00
Michael Stapelberg 4b6b5196b0 dns: correctly resolve PTR for hostname 2018-06-18 09:44:46 +02:00
Michael Stapelberg c743091929 dns: track number of questions and which upstream was used 2018-06-18 09:35:14 +02:00
Michael Stapelberg 24e2d5de00 dnsd: serve prometheus metrics on port 8053 2018-06-18 08:04:56 +02:00
Michael Stapelberg 0e6add220c notify dyndns from netconfigd, i.e. _after_ applying addresses 2018-06-17 20:44:25 +02:00
Michael Stapelberg ffc18ec527 diag: display ICMP echo source address (for ff02::2%uplink0) 2018-06-17 20:24:56 +02:00