Verbosity level affect the program functionality on Raspberry Pi

[paszahipsta]

I have run DDHCPD on Raspberry Pi successfuly. However, when I have specified verbosity twice: sudo ./ddhcpd -c eth0 -i eth0 -v -v, I got segmentation error after about 10-15 seconds. The output looks like this:

ubuntu@ubuntu:~/ddhcpd$ sudo ./ddhcpd -c eth0 -i eth0 -v -v
INFO: CONFIG: network=10.0.0.0/24
INFO: CONFIG: block_size=32
INFO: CONFIG: #blocks=8
INFO: CONFIG: #spare_leases=2
INFO: CONFIG: timeout=60
INFO: CONFIG: refresh_factor=4
INFO: CONFIG: tentative_timeout=15
INFO: CONFIG: client_interface=eth0
INFO: CONFIG: group_interface=eth0
DEBUG: ddhcp_block_init(config)
DEBUG: find_in_option_store(store, code:1)
DEBUG: set_in_option_store(store, code:1, len4)
DEBUG: find_in_option_store(store, code:1)
DEBUG: set_in_option_store(...): inserting option
DEBUG: find_in_option_store(store, code:2)
DEBUG: set_in_option_store(store, code:2, len4)
DEBUG: find_in_option_store(store, code:2)
DEBUG: set_in_option_store(...): inserting option
DEBUG: find_in_option_store(store, code:28)
DEBUG: set_in_option_store(store, code:28, len4)
DEBUG: find_in_option_store(store, code:28)
DEBUG: set_in_option_store(...): inserting option
DEBUG: find_in_option_store(store, code:51)
DEBUG: set_in_option_store(store, code:51, len4)
DEBUG: find_in_option_store(store, code:51)
DEBUG: set_in_option_store(...): inserting option
DEBUG: find_in_option_store(store, code:54)
DEBUG: set_in_option_store(store, code:54, len4)
DEBUG: find_in_option_store(store, code:54)
DEBUG: set_in_option_store(...): inserting option
DEBUG: epoll_add_fd(3,-2147483647)
DEBUG: epoll_add_fd(3,-2147483647)
DEBUG: epoll_add_fd(3,-2147483647)
DEBUG: epoll_add_fd(3,-2147483647)
DEBUG: netlink_init(config)
DEBUG: epoll_add_fd(3,-2147483647)
INFO: loop timeout: 7500 msecs
DEBUG: netlink_callback(...): callback triggered
DEBUG: netlink_callback(...): iface(3) up
DEBUG: ntoh_dhcp_packet(...): package len:296
DEBUG: BOOTP [ op 1, htype 1, hlen 6, hops 0, xid 1106945831, secs 128, flags 0, ciaddr 0.0.0.0, DEBUG: yiaddr 0.0.0.0, DEBUG: siaddr 0.0.0.0, DEBUG: giaddr 0.0.0.0, sname: , file:  ]
DEBUG: DHCP OPTION [ code 53, length 1, value 1 ]
DEBUG: DHCP OPTION [ code 61, length 19 ]
DEBUG: DHCP OPTION [ code 55, length 11, value 1 3 12 15 6 26 33 121 119 42 120 ]
DEBUG: DHCP OPTION [ code 57, length 2 ]
DEBUG: DHCP OPTION [ code 50, length 4 ]
DEBUG: DHCP OPTION [ code 12, length 6 ]
DEBUG: DHCP OPTION [ code 255, length 0 ]
DEBUG: dhcp_hdl_discover(socket:8, packet, config)
DEBUG: block_find_free_leases(config)
DEBUG: block_find_free_leases(...): No block found!
DEBUG: dhcp_hdl_discover(...): no block with free leases found
DEBUG: Segmentation fault

If I set up verbosity with only one flag, everything is working perfectly. Raspberry is running on ubuntu server 20.04 for raspberries.