Very Computer

1. dhcpd problem: fallback_discard: Connection refused

Can someone please explain this:

Setting:

dhcp-server: 192.168.1.1, dhcpd-2.0-5 (RedHat 6.2)
dhcp-client: 192.168.1.3, dhcpcd-1.3.18pl8-10 (RedHat 7.1)

192.168.1.1: /var/log/messages:
===============================

May 27 20:40:39 neb dhcpd: DHCPREQUEST for 192.168.1.3 from 00:10:5a:71:6b:c4 via eth0
May 27 20:40:39 neb dhcpd: DHCPACK on 192.168.1.3 to 00:10:5a:71:6b:c4 via eth0
May 27 20:40:39 neb dhcpd: fallback_discard: Connection refused

192.168.1.1: tcpdump -i eth0 -n '(icmp or (udp port 67 or 68))'
===============================================================

20:40:39.104524 < 192.168.1.3.bootpc > 192.168.1.1.bootps: xid:0x7b520505 secs:3 C:192.168.1.3 [|bootp]
20:40:39.106236 > 192.168.1.1.bootps > 192.168.1.3.bootpc: xid:0x7b520505 secs:3 C:192.168.1.3 Y:192.168.1.3 S:192.168.1.1 ether 0:10:5a:71:6b:c4 [|bootp]
20:40:39.106576 < 192.168.1.3 > 192.168.1.1: icmp: 192.168.1.3 udp port bootpc unreachable (DF) [tos 0xc0]

192.168.1.3: tcpdump -i eth0 -n -p '(icmp or (udp port 67 or 68))'
===============================================================

20:28:48.453032 < 192.168.1.1.bootps > 192.168.1.3.bootpc: xid:0xdd351577 secs:3 C:192.168.1.3 Y:192.168.1.3 S:192.168.1.1 ether
0:10:5a:71:6b:c4 [|bootp] 20:28:48.453032 > 192.168.1.3 > 192.168.1.1: icmp: 192.168.1.3 udp port bootpc unreachable (DF) [tos 0xc0]
20:33:48.453032 < 192.168.1.1.bootps > 192.168.1.3.bootpc: xid:0x7b520505 secs:3 C:192.168.1.3 Y:192.168.1.3 S:192.168.1.1 ether 0:10:5a:71:6b:c4 [|bootp]
20:33:48.453032 > 192.168.1.3 > 192.168.1.1: icmp: 192.168.1.3 udp port bootpc unreachable (DF) [tos 0xc0]

Questions:
==========

Why does it give an error?
Why does 192.168.1.1 sees a packet coming from 192.168.1.3, and why
doesn't 192.168.1.3 doesn't see this packet originating from him?

Greetings,
--
ben . de . rydt at pandora . be ------------------ your comments
http://users.pandora.be/bdr/ ------- inl. IPv6, Linux en Pandora

2. Looking for driver developper

3. Matrox Mystique ands X.

4. How to specify memory size when building kernel?

5. Binding DHCPD to a particular interface in dhcpd.conf

6. Compaq network interface (Intel 595)

7. DHCPD won't starf in rc.dhcpd

8. killing httpd, but not dead.

9. DHCPD - particulars of dhcpd.conf file

10. dhcpd and the filename parameter in the dhcpd.conf

11. dhcpd fails to update dhcpd.leases

12. Fast linux-windows connection, slow linux-linux connection??

13. DHCPD Windows XP DHCPOFFER no DHCPREQUEST