Below is the output of command ip link:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
9: veth1@if10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
link/ether e6:f9:cf:3c:41:9c brd ff:ff:ff:ff:ff:ff link-netnsid 0

When I use iperf3 to send udp packets across the namespace of size 8KB and the packets on wireshark. The packets doesn't get fragmented even when MTU is set as 1500 on both the virtual interfaces across the namespace.

What should I do to get fragmented packets from the namespace? Below is the tcpdump output:

14:57:51.806895 IP Wimax-Cali-190-0-1-2.orbitel.net.co.58280 > 190.0.1.1.5201: UDP, length 4
14:57:51.807058 IP 190.0.1.1.5201 > Wimax-Cali-190-0-1-2.orbitel.net.co.58280: UDP, length 4
14:57:51.846706 IP Wimax-Cali-190-0-1-2.orbitel.net.co.58280 > 190.0.1.1.5201: UDP, length 8192
14:57:51.946975 IP Wimax-Cali-190-0-1-2.orbitel.net.co.58280 > 190.0.1.1.5201: UDP, length 8192
14:57:51.947027 IP Wimax-Cali-190-0-1-2.orbitel.net.co.58280 > 190.0.1.1.5201: UDP, length 8192
14:57:51.947048 IP Wimax-Cali-190-0-1-2.orbitel.net.co.58280 > 190.0.1.1.5201: UDP, length 8192
14:57:51.947068 IP Wimax-Cali-190-0-1-2.orbitel.net.co.58280 > 190.0.1.1.5201: UDP, length 8192

Sorted by: Reset to default

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