Re: [lwip-users] Set IP address as none

2018-03-13 Thread goldsi...@gmx.de
On 13.03.2018 16:21, Giuseppe Modugno wrote: I have ip4_addr_t and I want to set it to a "null"/invalid value. Is it better to use IPADDR_NONE or IPADDR_ANY? ANY! NONE is all ones and is only used in parsing functions returning "this is not a valid IP address". This is derived from INADDR_AN

[lwip-users] Set IP address as none

2018-03-13 Thread Giuseppe Modugno
I have ip4_addr_t and I want to set it to a "null"/invalid value. Is it better to use IPADDR_NONE or IPADDR_ANY? At first, I thought IPADDR_NONE was the best choice, but I found that dns.c uses IPADDR_ANY to flag a DNS server as invalid. Moreover, there are ip4_addr_isany() and ip4_addr_set_a