diff --git a/ansible/roles/test/tasks/bgp_speaker.yml b/ansible/roles/test/tasks/bgp_speaker.yml
index 7ae0717e7b8..e54612a554c 100644
--- a/ansible/roles/test/tasks/bgp_speaker.yml
+++ b/ansible/roles/test/tasks/bgp_speaker.yml
@@ -199,7 +199,8 @@
           - fib_info='/root/bgp_speaker_route.txt'
           - ipv4={{ ipv4|default(false) }}
           - ipv6={{ ipv6|default(false) }}
-        ptf_extra_options: "--relax --debug info --log-file /tmp/bgp_speaker_test.FibTest.log"
+          - testbed_mtu={{ mtu|default(9114) }}
+        ptf_extra_options: "--relax --debug info --log-file /tmp/bgp_speaker_test.FibTest.log --socket-recv-size 16384"
   always:
     - name: Kill exabgp instances
       shell: pkill exabgp
diff --git a/ansible/roles/test/tasks/warm-reboot-fib.yml b/ansible/roles/test/tasks/warm-reboot-fib.yml
index 63eff1f73d6..b73d8cc8dc7 100644
--- a/ansible/roles/test/tasks/warm-reboot-fib.yml
+++ b/ansible/roles/test/tasks/warm-reboot-fib.yml
@@ -19,7 +19,8 @@
       - fib_info='/root/fib_info.txt'
       - ipv4={{ipv4}}
       - ipv6={{ipv6}}
-    ptf_extra_options: "--relax --debug info --log-file /tmp/fib_test.FibTest.ipv4.{{ipv4}}.ipv6.{{ipv6}}.{{lookup('pipe','date +%Y-%m-%d-%H:%M:%S')}}.log "
+      - testbed_mtu={{ mtu|default(9114) }}
+    ptf_extra_options: "--relax --debug info --log-file /tmp/fib_test.FibTest.ipv4.{{ipv4}}.ipv6.{{ipv6}}.{{lookup('pipe','date +%Y-%m-%d-%H:%M:%S')}}.log --socket-recv-size 16384"
 
 - name: "Show ptf params PTF Test - {{ ptf_test_name }}"
   debug: msg="ptf --test-dir {{ ptf_test_dir }} {{ ptf_test_path }} {% if ptf_qlen is defined %} --qlen={{ ptf_qlen }} {% endif %} {% if ptf_platform_dir is defined %} --platform-dir {{ ptf_platform_dir }} {% endif %} --platform {{ ptf_platform }} {% if ptf_test_params is defined %} -t \"{{ ptf_test_params | default([]) | join(';') }}\" {% endif %} {{ ptf_extra_options | default(\"\")}} --disable-vxlan --disable-geneve --disable-erspan --disable-mpls --disable-nvgre 2>&1"