diff --git a/tools/tcplife.py b/tools/tcplife.py
index 1f4454c..ac32fbd 100755
--- a/tools/tcplife.py
+++ b/tools/tcplife.py
@@ -78,9 +78,9 @@
 struct ipv4_data_t {
     // XXX: switch some to u32's when supported
     u64 ts_us;
-    u64 pid;
-    u64 saddr;
-    u64 daddr;
+    u32 pid;
+    u32 saddr;
+    u32 daddr;
     u64 ports;
     u64 rx_b;
     u64 tx_b;
@@ -91,7 +91,7 @@
 
 struct ipv6_data_t {
     u64 ts_us;
-    u64 pid;
+    u32 pid;
     unsigned __int128 saddr;
     unsigned __int128 daddr;
     u64 ports;
@@ -195,8 +195,10 @@
     u16 family = sk->__sk_common.skc_family;
 
     if (family == AF_INET) {
-        struct ipv4_data_t data4 = {.span_us = delta_us,
-            .rx_b = rx_b, .tx_b = tx_b};
+        struct ipv4_data_t data4 = {};
+        data4.span_us = delta_us;
+        data4.rx_b = rx_b;
+        data4.tx_b = tx_b;
         data4.ts_us = bpf_ktime_get_ns() / 1000;
         data4.saddr = sk->__sk_common.skc_rcv_saddr;
         data4.daddr = sk->__sk_common.skc_daddr;
@@ -316,11 +318,13 @@
     tx_b = tp->bytes_acked;
 
     if (args->family == AF_INET) {
-        struct ipv4_data_t data4 = {.span_us = delta_us,
-            .rx_b = rx_b, .tx_b = tx_b};
+        struct ipv4_data_t data4 = {};
+        data4.span_us = delta_us;
+        data4.rx_b = rx_b;
+        data4.tx_b = tx_b;
         data4.ts_us = bpf_ktime_get_ns() / 1000;
-        bpf_probe_read(&data4.saddr, sizeof(u32), args->saddr);
-        bpf_probe_read(&data4.daddr, sizeof(u32), args->daddr);
+        __builtin_memcpy(&data4.saddr, args->saddr, sizeof(data4.saddr));
+        __builtin_memcpy(&data4.daddr, args->daddr, sizeof(data4.daddr));
         // a workaround until data4 compiles with separate lport/dport
         data4.ports = dport + ((0ULL + lport) << 32);
         data4.pid = pid;
@@ -336,8 +340,8 @@
         struct ipv6_data_t data6 = {.span_us = delta_us,
             .rx_b = rx_b, .tx_b = tx_b};
         data6.ts_us = bpf_ktime_get_ns() / 1000;
-        bpf_probe_read(&data6.saddr, sizeof(data6.saddr), args->saddr_v6);
-        bpf_probe_read(&data6.daddr, sizeof(data6.daddr), args->saddr_v6);
+        __builtin_memcpy(&data6.saddr, args->saddr_v6, sizeof(data6.saddr));
+        __builtin_memcpy(&data6.daddr, args->daddr_v6, sizeof(data6.daddr));
         // a workaround until data6 compiles with separate lport/dport
         data6.ports = dport + ((0ULL + lport) << 32);
         data6.pid = pid;
@@ -390,9 +394,9 @@
 class Data_ipv4(ct.Structure):
     _fields_ = [
         ("ts_us", ct.c_ulonglong),
-        ("pid", ct.c_ulonglong),
-        ("saddr", ct.c_ulonglong),
-        ("daddr", ct.c_ulonglong),
+        ("pid", ct.c_uint),
+        ("saddr", ct.c_uint),
+        ("daddr", ct.c_uint),
         ("ports", ct.c_ulonglong),
         ("rx_b", ct.c_ulonglong),
         ("tx_b", ct.c_ulonglong),
@@ -403,7 +407,7 @@
 class Data_ipv6(ct.Structure):
     _fields_ = [
         ("ts_us", ct.c_ulonglong),
-        ("pid", ct.c_ulonglong),
+        ("pid", ct.c_uint),
         ("saddr", (ct.c_ulonglong * 2)),
         ("daddr", (ct.c_ulonglong * 2)),
         ("ports", ct.c_ulonglong),