Send dhcp-users mailing list submissions to
dhcp-users@lists.isc.org
To subscribe or unsubscribe via the World Wide Web, visit
https://lists.isc.org/mailman/listinfo/dhcp-users
or, via email, send a message with subject or body 'help' to
dhcp-users-requ...@lists.isc.org
You can reach the person managing the list at
dhcp-users-ow...@lists.isc.org
When replying, please edit your Subject line so it is more specific
than "Re: Contents of dhcp-users digest..."
Today's Topics:
1. RE: dhcrelay duplicated request (IMMO WETZEL)
----------------------------------------------------------------------
Message: 1
Date: Mon, 15 Jan 2018 15:53:11 +0000
From: IMMO WETZEL <immo.wet...@adtran.com>
To: "dhcp-users@lists.isc.org" <dhcp-users@lists.isc.org>
Subject: RE: dhcrelay duplicated request
Message-ID:
<f5452071f098e84b91d98fde02860faaf1480...@ex-mb1.corp.adtran.com>
Content-Type: text/plain; charset="windows-1252"
As far as I see the unicast doesn't have to be touched..
https://tools.ietf.org/html/rfc3046
2.1<https://tools.ietf.org/html/rfc3046#section-2.1> Agent Operation
...
Relay agents are NOT required to monitor or modify client-originated
DHCP packets addressed to a server unicast address. This includes
the DHCP-REQUEST sent when entering the RENEWING state.
Immo
This message has been classified General Business by IMMO WETZEL on Montag, 15.
Januar 2018 at 16:50:08.
From: IMMO WETZEL
Sent: Monday, January 15, 2018 4:19 PM
To: dhcp-users@lists.isc.org
Subject: dhcrelay duplicated request
HI
Why do I get duplicated request frames towards the dhcp server ?
One as unicast from originator and one as unicast from the relay.
Do I have to do some filtering ?
The dhcp relay is version 4.3.6 self compiled and running inside a docker
container.
Routing is enabled between the IU and ID interfaces
Start command dhcrelay -4 -d -iu ens18 -id br_TB102_TMN 10.160.5.2
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default gateway 0.0.0.0 UG 0 0 0 ens18
10.160.8.0 0.0.0.0 255.255.254.0 U 0 0 0 ens18
10.160.50.16 0.0.0.0 255.255.255.240 U 0 0 0
br_TB102_TMN
172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker0
#brctl show
# brctl show
bridge name bridge id STP enabled
interfaces
br_TB102_DPU 8000.42b99b1e1cc9 no
ens19.2002
ens19.2002.4090
br_TB102_TMN 8000.7a598845a623 no
ens20.1002
docker0 8000.0242380e275a no
#ip a
ip a
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: ens18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
group default qlen 1000
link/ether 36:78:14:96:53:13 brd ff:ff:ff:ff:ff:ff
inet 10.160.8.83/23 brd 10.160.9.255 scope global ens18
valid_lft forever preferred_lft forever
inet6 fe80::3478:14ff:fe96:5313/64 scope link
valid_lft forever preferred_lft forever
3: ens19: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
group default qlen 1000
link/ether 42:b9:9b:1e:1c:c9 brd ff:ff:ff:ff:ff:ff
inet6 fe80::40b9:9bff:fe1e:1cc9/64 scope link
valid_lft forever preferred_lft forever
4: ens20: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
group default qlen 1000
link/ether 7a:59:88:45:a6:23 brd ff:ff:ff:ff:ff:ff
inet6 fe80::7859:88ff:fe45:a623/64 scope link
valid_lft forever preferred_lft forever
5: ens20.1002@ens20: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
master br_TB102_TMN state UP group default qlen 1000
link/ether 7a:59:88:45:a6:23 brd ff:ff:ff:ff:ff:ff
inet6 fe80::7859:88ff:fe45:a623/64 scope link
valid_lft forever preferred_lft forever
6: ens19.2002@ens19: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
master br_TB102_DPU state UP group default qlen 1000
link/ether 42:b9:9b:1e:1c:c9 brd ff:ff:ff:ff:ff:ff
inet6 fe80::40b9:9bff:fe1e:1cc9/64 scope link
valid_lft forever preferred_lft forever
7: br_TB102_DPU: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP group default qlen 1000
link/ether 42:b9:9b:1e:1c:c9 brd ff:ff:ff:ff:ff:ff
inet 10.160.60.17/28 brd 10.160.60.31 scope global br_TB102_DPU
valid_lft forever preferred_lft forever
inet6 fe80::40b9:9bff:fe1e:1cc9/64 scope link
valid_lft forever preferred_lft forever
8: br_TB102_TMN: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP group default qlen 1000
link/ether 7a:59:88:45:a6:23 brd ff:ff:ff:ff:ff:ff
inet 10.160.50.17/28 brd 10.160.50.31 scope global br_TB102_TMN
valid_lft forever preferred_lft forever
inet6 fe80::7859:88ff:fe45:a623/64 scope link
valid_lft forever preferred_lft forever
9: ens19.2002.4090@ens19.2002: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue master br_TB102_DPU state UP group default qlen 1000
link/ether 42:b9:9b:1e:1c:c9 brd ff:ff:ff:ff:ff:ff
inet6 fe80::40b9:9bff:fe1e:1cc9/64 scope link
valid_lft forever preferred_lft forever
10: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state
DOWN group default
link/ether 02:42:38:0e:27:5a brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::42:38ff:fe0e:275a/64 scope link
valid_lft forever preferred_lft forever
pcap is available at:
https://turl.ca/semr
Mit freundlichen Gr??en / With kind regards
Immo Wetzel
ADTRAN GmbH
Siemensallee 1
17489 Greifswald
Germany
Phone: +49 3834 5352 823
Mobile: +49 151 147 29 225
Skype: immo_wetzel_adtran
immo.wet...@adtran.com<mailto:immo.wet...@adtran.com> PGP-Fingerprint: 7313
7E88 4E19 AACF 45E9 E74D EFF7 0480 F4CF 6426
http://www.adtran.com<http://www.adtran.com/>
Sitz der Gesellschaft: Berlin / Registered office: Berlin
Registergericht: Berlin / Commercial registry: Amtsgericht Charlottenburg, HRB
135656 B
Gesch?ftsf?hrung / Managing Directors: Roger Shannon, James D. Wilson, Jr., Dr.
Eduard Scheiterer
This message has been classified General Business by IMMO WETZEL on Montag, 15.
Januar 2018 at 16:19:17.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<https://lists.isc.org/pipermail/dhcp-users/attachments/20180115/697301d4/attachment.html>
------------------------------
Subject: Digest Footer
_______________________________________________
dhcp-users mailing list
dhcp-users@lists.isc.org
https://lists.isc.org/mailman/listinfo/dhcp-users
------------------------------
End of dhcp-users Digest, Vol 111, Issue 18
*******************************************
