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Cisco Bug: CSCuo56015 - sometimes TFTP server IP cannot be cleared by UI after releasing DHCPv4

Last Modified

Feb 09, 2017

Products (1)

  • Cisco IP Phone 8800 Series

Known Affected Releases

1.0(0)

Description (partial)

Symptom:
sometimes TFTP server IP cannot be cleared by UI after releasing DHCPv4

Conditions:
Phone Information:
1)Phone loads: 10-2-1MN97
2)Dual stack, IPv4 prefer
3)IPv4/IPv6 Setup have been configured by DHCPv4/DHCPv6 server
3)Registered to CUCM

Reproducing steps:
1)Go to [IPv4 Setup] page of UI
2)Press [ON] button to make [12 DHCP Address Released] status from OFF to ON.
3)All DHCPv4 information is cleared from UI, but TFTP server IP address is still in [9 TFTP server 1] 
4)Press [Exit] button to go back the homepage of settings, and then go to [IPv4 Setup] page again, [9 TFTP server 1] is empty, TFTP IP address is cleared by UI.
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